More a factor against Germany AFAIU. Japan relied on code books, not crytographi...

		dredmorbius 12 days ago \| parent \| context \| favorite \| on: Mapping 20k ships that sank during WW II More a factor against Germany AFAIU. Japan relied on code books, not crytographic mechanisms. Japanese Empirical codes were cracked dating to the beginning of the war AFAIU, or at the very least 1942.